DE2523815A1 - RING-SHAPED CLUTCH LINING - Google Patents

Description

PFENNING MAAS - SEILER MEINIG LEMKE SPOTT

PATENTANWÄLTE BERLIN · MÖNCHEN · AUGSBURG

J. Pfenning, Dipl.-Ing. · Berlin

. Dr. I. Maas, Dipl.-Chem. · Munich

* Patent attorney · Pfenning · Maas · Salier · MeInIg · Lemke · Spott _{H Se || (sr |} oFpl.-lng- ■ Berlin

K. H. MeInIg, Dlpl.-Phys. · Berlin J. M. Lemke, Dlpl.-lng. Augsburg Dr. G. Spott, Dlpl.-Chem. ■ Munich

Folio: 82035 BORO BERLIN:

D 1000 Berlin 19

Oldenburgallee 10

Telephone: 030/3045521/3045522

Telegram address:. . Cable defense patent

Your reference your · Message from our reference Berlin Your reference Your letter of Our reference date

Me / schu May 28, 1975

SMALL & PARKES LIMITED Manchester, M9 1 SX, Lancashire, England

Annular clutch lining

The invention relates to an annular clutch facing, in particular to a facing, the grooves or grooves having.

In known ring-shaped clutch facings, it is common practice to have radial grooves between the rivet holes or to the radius to provide acute-angled grooves that extend from the inner edge to the outer edge of the annular clutch lining,

The advantages that these grooves provide are that they promote the removal of debris that may arise

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(especially during the first phase of use) and thereby prevent adverse scoring, and that they increase the flexibility of the clutch plate to which the clutch lining is attached and thereby increase the Improve coupling properties of the coupling plate, with coupling vibrations and noises to a minimum remain limited.

In general, grooved clutch facings are either textile-j reinforced or specially shaped parts, the latter type made from asbestos (and / or other short fibers) and various fillers, which are bonded with resins under the action of heat and pressure. With the textile reinforced coverings, the grooves have no influence on the resistance to centrifugation of the coverings. With the molded coverings on the other hand, the grooves reduce the resistance to throwning of the drilled coverings, which can be undesirable,

The object of the invention is to avoid or reduce the aforementioned disadvantage of shaped clutch plates.

To solve this problem, an annular shaped clutch facing was created according to the invention, which is characterized in that the clutch facing

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provided grooves end at a certain distance from the inner edge of the annular clutch facing.

The grooves can run radially or at an acute angle to the respective radius.

Preferably, the inner ends of the grooves lie on a circle that is coaxial with the annular clutch facing and is tangential to the edges of the rivet holes drilled in the clutch facing.

The attached drawing is intended to be used in conjunction with the following description based on exemplary embodiments further details and clarify and represent the advantages of the invention. Here are:

Fig. 1 is a plan view of an embodiment of the clutch facing according to the invention, and

Fig. 2 is a plan view of a second embodiment

example of the clutch lining according to the invention,

Fig. 1 shows an annular according to the invention ^:

i Clutch lining 5, which is made of asbestos (and / or other {

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short fibers) and various fillers that are under Under the action of heat and pressure by means of resins, has been molded. Are in the workspace Grooves 6 are provided, which are directed radially.

The grooves 6 end at a certain distance from the inner edge of the clutch lining, in order to prevent it from being thrown out to increase the clutch lining. So that the sling resistance of the grooved clutch facing is the sling resistance reached the unslotted clutch facing, the grooves 6 should end approximately at the boundary circle 7, which those rivet through holes 8, which are closest to the inner edge of the clutch lining, touches the inside.

The clutch facing 9 shown in Fig. 2 has essentially the same design as the clutch facing 5 on. In this embodiment, rivet through holes 10 are arranged along a single circle, and grooves 11 run at an acute angle to the respective radius of the clutch lining, the grooves 11 on the Limit circle 12 ends.

The arrangement of the grooves and through holes is not limited to the examples shown. You can

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for example, overlap or partially merge into one another. The number of grooves and through holes can be vary. Instead of in the form of the illustrated regular pattern, the through holes can be in the form of an irregular Pattern be arranged, and the distances between the grooves do not have to be constant.

Although the illustrated embodiments are clutch facings, the invention relates generally to annular friction materials (e.g., annular brake linings), and the term "clutch lining" is used therein Meaning to understand.

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Claims (3)

Expectations ίΐλ Annular, shaped, grooved clutch lining, characterized in that the grooves j provided in the clutch facing (5, 9) (6, 11) end at a predetermined distance from the inner edge of the clutch lining. 2. Annular clutch facing according to claim 1, characterized j characterized in that the grooves (6) are directed radially, 3. Annular clutch cover according to claim 1, characterized ! characterized in that the grooves (11) run at an acute angle ] \ to the respective radius of the clutch lining, j! ι 4, annular clutch facing according to claim 1 to 3, j characterized in that the grooves (6, 11) inside i end at a boundary circle (7, 12) which is coaxial with the j I j annular clutch facing and tangential to the; i the edges of the through holes drilled into the clutch facing I; holes lies, ' 609821/0227